package com.sen.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sen.common.R;
import com.sen.dto.DishDto;
import com.sen.dto.SetmealDto;
import com.sen.entity.Category;
import com.sen.entity.Dish;
import com.sen.entity.Setmeal;
import com.sen.entity.SetmealDish;
import com.sen.service.CategoryService;
import com.sen.service.DishService;
import com.sen.service.SetmealDishService;
import com.sen.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐管理
 */
@Slf4j
@RestController
@RequestMapping("/setmeal")
public class SetmealController {

    @Autowired
    private SetmealService setmealService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private DishService dishService;

    /**
     * 新增套餐
     *
     * @param setmealDto
     * @return
     */
    @PostMapping
    @CacheEvict(value = "setmealCache" ,allEntries = true) //删除缓存
    public R<String> save(@RequestBody SetmealDto setmealDto) {
        log.info("套餐信息：{}", setmealDto);

        setmealService.saveWithDish(setmealDto);

        return R.success("新增套餐成功");
    }


    /**
     * 套餐分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);
        Page<SetmealDto> dtoPage = new Page<>();

        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null, Setmeal::getName, name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dtoPage, "records");
        List<Setmeal> records = pageInfo.getRecords();

        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item, setmealDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        dtoPage.setRecords(list);
        return R.success(dtoPage);
    }

    /**
     * 删除套餐
     *
     * @param ids
     * @return
     *
     * CacheEvict:value 缓存名称 ,allEntries = true 删除setmealCache下的所有缓存数据
     */
    @DeleteMapping
    @CacheEvict(value = "setmealCache" ,allEntries = true) //删除缓存
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids:{}", ids);

        setmealService.removeWithDish(ids);

        return R.success("套餐数据删除成功");
    }

    /**
     * 根据条件查询对应的套餐数据
     *
     * @param setmeal
     * @return
     *
     * Cacheable :value 缓存名称 ;key 缓存的key
     */
    @GetMapping("/list")
    @Cacheable(value = "setmealCache",key = "#setmeal.categoryId + '_' + #setmeal.status")//添加缓存
    public R<List<Setmeal>> list(Setmeal setmeal) {
        log.info("setmeal:{}", setmeal);
        //条件构造器
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId, setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null, Setmeal::getStatus, setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        return R.success(setmealService.list(queryWrapper));
    }

    /**
     * 批量起售,停售
     *
     * @param status 状态: 0 停售 1 起售
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    @CacheEvict(value = "setmealCache" ,allEntries = true) //删除缓存
    public R<String> openBatch(@PathVariable Integer status, Long[] ids) {

        //更新条件构造器
        LambdaUpdateWrapper<Setmeal> updateWrapper = new LambdaUpdateWrapper<>();
        updateWrapper.in(Setmeal::getId, ids);
        updateWrapper.set(Setmeal::getStatus, status);
        setmealService.update(updateWrapper);

        String msg = "";
        // 0 停售 1 起售
        if (status == 0) {
            msg = "套餐停售成功";
        } else if (status == 1) {
            msg = "套餐起售成功";
        }
        return R.success(msg);
    }

    /**
     * 根据id查询套餐信息和对应的菜品信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<SetmealDto> get(@PathVariable Long id) {

        SetmealDto setmealDto = setmealService.getByIdWithDish(id);
        //根据分类id查询分类对象
        Category category = categoryService.getById(setmealDto.getCategoryId());
        if (category != null) {
            //分类名称
            setmealDto.setCategoryName(category.getName());
        }
        return R.success(setmealDto);
    }

    /**
     * 修改套餐
     *
     * @param setmealDto
     * @return
     */
    @PutMapping
    @CacheEvict(value = "setmealCache" ,allEntries = true) //删除缓存
    public R<String> update(@RequestBody SetmealDto setmealDto) {
        log.info(setmealDto.toString());
        setmealService.updateWithFlavor(setmealDto);
        return R.success("修改套餐成功");
    }

    /**
     * 获取当前套餐中有的菜品
     * @param id 套餐id
     * @return 返回菜品集合
     */
    @GetMapping("/dish/{id}")
    public R<List<Dish>> dish(@PathVariable Long id) {

        //查询当前套餐对应的菜品信息，从setmeal_dish表查询
        LambdaQueryWrapper<SetmealDish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SetmealDish::getSetmealId, id);
        List<SetmealDish> setmealDishes = setmealDishService.list(queryWrapper);

        List<Long> dishIds = new ArrayList<>();
        //取出菜品id
        for (SetmealDish setmealDish : setmealDishes) {
            dishIds.add(setmealDish.getDishId());
        }
        // 根据菜品id查出菜品
        LambdaQueryWrapper<Dish> dishQueryWrapper = new LambdaQueryWrapper<>();
        dishQueryWrapper.in(Dish::getId, dishIds);

        return R.success(dishService.list(dishQueryWrapper));
    }

}
